TY  - JOUR
AU  - Többen, Johannes
TI  - On the simultanious estimation of physical and monetary commodity flows
JO  - Economic systems research
VL  - 29
IS  - 1
SN  - 0953-5314
CY  - London [u.a.]
PB  - Taylor & Francis
M1  - FZJ-2016-06773
SP  - 1-24 
PY  - 2017
AB  - Large databases mapping commodity flows measured in various units such as currency, tons or caloric values are the backbone of many recent environmental-economic studies. Their construction typically requires combining large amounts of partial information in a series of successive steps. These include the estimation of unobserved flows, transformations between units, handling aggregation re-classification and, finally, reconciling estimates with mass, financial and/or energy balances. This paper proposes a maximum entropy model that allows for the simultaneous estimation of unobserved commodity flows as well as corresponding prices such that data constraints in various units of measurement, levels of aggregation and possibly mismatching classifications are simultaneously satisfied. Its capability is assessed through a Monte-Carlo analysis and its performance compared with a simple step-wise approach. Our results suggest that the simultaneous approach performs significantly better in a vast majority of cases.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000395062800001
DO  - DOI:10.1080/09535314.2016.1271774
UR  - https://juser.fz-juelich.de/record/824152
ER  -